Blender not rendering animation?
Make sure you have a light source bright enough in your scene.
Check your compositor and make sure that the scene output is wired into the final image (I think it's called composite, I'm not sure, I'm writing this on my phone).
Next, to solve your problem with 60 images instead of 11, go to properties, and click on the camera icon. In the first or second section should be a drop-down menu for the frame rate. Click on custom and type "10" for your frame rate.


Also, make sure your actual animation is only 11 frames long in the timeline. Check your file output settings too. Other than that, I don't know what could be causing those black frames.